ABAP Select data from SAP table PA0157 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PA0157 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to PA0157. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the PA0157 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_PA0157 TYPE STANDARD TABLE OF PA0157,
      WA_PA0157 TYPE PA0157,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <PA0157> TYPE PA0157.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PA0157.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PA0157
  INTO TABLE IT_PA0157.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PA0157
*  INTO TABLE @DATA(IT_PA01572).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_PA0157 INDEX 1 INTO DATA(WA_PA01572).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PA0157 ASSIGNING <PA0157>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PA0157>-MANDT = 1.
<PA0157>-PERNR = 1.
<PA0157>-SUBTY = 1.
<PA0157>-OBJPS = 1.
<PA0157>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_PA0157 INTO WA_PA0157.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PA0157-ENDDA, sy-vline,
  WA_PA0157-BEGDA, sy-vline,
  WA_PA0157-SEQNR, sy-vline,
  WA_PA0157-AEDTM, sy-vline,
  WA_PA0157-UNAME, sy-vline,
  WA_PA0157-HISTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PA0157 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_PA0157 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_PA0157 INTO WA_PA0157.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PA0157_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
SUBTY TYPE STRING,
OBJPS TYPE STRING,
SPRPS TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
SEQNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
HISTO TYPE STRING,
ITXEX TYPE STRING,
REFEX TYPE STRING,
ORDEX TYPE STRING,
ITBLD TYPE STRING,
PREAS TYPE STRING,
FLAG1 TYPE STRING,
FLAG2 TYPE STRING,
FLAG3 TYPE STRING,
FLAG4 TYPE STRING,
RESE1 TYPE STRING,
RESE2 TYPE STRING,
GRPVL TYPE STRING,
DATO1 TYPE STRING,
CDDA1 TYPE STRING,
DATO2 TYPE STRING,
CDDA2 TYPE STRING,
DATO3 TYPE STRING,
CDDA3 TYPE STRING,
DATO4 TYPE STRING,
CDDA4 TYPE STRING,
DATO5 TYPE STRING,
CDDA5 TYPE STRING,
DATO6 TYPE STRING,
CDDA6 TYPE STRING,
DATO7 TYPE STRING,
CDDA7 TYPE STRING,
DATO8 TYPE STRING,
CDDA8 TYPE STRING,
DATO9 TYPE STRING,
CDDA9 TYPE STRING,
DAT10 TYPE STRING,
CDD10 TYPE STRING,
DAT11 TYPE STRING,
CDD11 TYPE STRING,
DAT12 TYPE STRING,
CDD12 TYPE STRING,
DAT13 TYPE STRING,
CDD13 TYPE STRING,
DAT14 TYPE STRING,
CDD14 TYPE STRING,
DAT15 TYPE STRING,
CDD15 TYPE STRING,
DAT16 TYPE STRING,
CDD16 TYPE STRING,
DAT17 TYPE STRING,
CDD17 TYPE STRING,
DAT18 TYPE STRING,
CDD18 TYPE STRING,
DAT19 TYPE STRING,
CDD19 TYPE STRING,
DAT20 TYPE STRING,
CDD20 TYPE STRING,
DAT21 TYPE STRING,
CDD21 TYPE STRING,
DAT22 TYPE STRING,
CDD22 TYPE STRING,
DAT23 TYPE STRING,
CDD23 TYPE STRING,
DAT24 TYPE STRING,
CDD24 TYPE STRING,
DAT25 TYPE STRING,
CDD25 TYPE STRING,
DAT26 TYPE STRING,
CDD26 TYPE STRING,
DAT27 TYPE STRING,
CDD27 TYPE STRING,
DAT28 TYPE STRING,
CDD28 TYPE STRING,
DAT29 TYPE STRING,
CDD29 TYPE STRING,
DAT30 TYPE STRING,
CDD30 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PA0157_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_PA0157_STR-MANDT sy-vline 
WA_PA0157_STR-PERNR sy-vline 
WA_PA0157_STR-SUBTY sy-vline 
WA_PA0157_STR-OBJPS sy-vline 
WA_PA0157_STR-SPRPS sy-vline 
WA_PA0157_STR-ENDDA sy-vline 
WA_PA0157_STR-BEGDA sy-vline 
WA_PA0157_STR-SEQNR sy-vline 
WA_PA0157_STR-AEDTM sy-vline 
WA_PA0157_STR-UNAME sy-vline 
WA_PA0157_STR-HISTO sy-vline 
WA_PA0157_STR-ITXEX sy-vline 
WA_PA0157_STR-REFEX sy-vline 
WA_PA0157_STR-ORDEX sy-vline 
WA_PA0157_STR-ITBLD sy-vline 
WA_PA0157_STR-PREAS sy-vline 
WA_PA0157_STR-FLAG1 sy-vline 
WA_PA0157_STR-FLAG2 sy-vline 
WA_PA0157_STR-FLAG3 sy-vline 
WA_PA0157_STR-FLAG4 sy-vline 
WA_PA0157_STR-RESE1 sy-vline 
WA_PA0157_STR-RESE2 sy-vline 
WA_PA0157_STR-GRPVL sy-vline 
WA_PA0157_STR-DATO1 sy-vline 
WA_PA0157_STR-CDDA1 sy-vline 
WA_PA0157_STR-DATO2 sy-vline 
WA_PA0157_STR-CDDA2 sy-vline 
WA_PA0157_STR-DATO3 sy-vline 
WA_PA0157_STR-CDDA3 sy-vline 
WA_PA0157_STR-DATO4 sy-vline 
WA_PA0157_STR-CDDA4 sy-vline 
WA_PA0157_STR-DATO5 sy-vline 
WA_PA0157_STR-CDDA5 sy-vline 
WA_PA0157_STR-DATO6 sy-vline 
WA_PA0157_STR-CDDA6 sy-vline 
WA_PA0157_STR-DATO7 sy-vline 
WA_PA0157_STR-CDDA7 sy-vline 
WA_PA0157_STR-DATO8 sy-vline 
WA_PA0157_STR-CDDA8 sy-vline 
WA_PA0157_STR-DATO9 sy-vline 
WA_PA0157_STR-CDDA9 sy-vline 
WA_PA0157_STR-DAT10 sy-vline 
WA_PA0157_STR-CDD10 sy-vline 
WA_PA0157_STR-DAT11 sy-vline 
WA_PA0157_STR-CDD11 sy-vline 
WA_PA0157_STR-DAT12 sy-vline 
WA_PA0157_STR-CDD12 sy-vline 
WA_PA0157_STR-DAT13 sy-vline 
WA_PA0157_STR-CDD13 sy-vline 
WA_PA0157_STR-DAT14 sy-vline 
WA_PA0157_STR-CDD14 sy-vline 
WA_PA0157_STR-DAT15 sy-vline 
WA_PA0157_STR-CDD15 sy-vline 
WA_PA0157_STR-DAT16 sy-vline 
WA_PA0157_STR-CDD16 sy-vline 
WA_PA0157_STR-DAT17 sy-vline 
WA_PA0157_STR-CDD17 sy-vline 
WA_PA0157_STR-DAT18 sy-vline 
WA_PA0157_STR-CDD18 sy-vline 
WA_PA0157_STR-DAT19 sy-vline 
WA_PA0157_STR-CDD19 sy-vline 
WA_PA0157_STR-DAT20 sy-vline 
WA_PA0157_STR-CDD20 sy-vline 
WA_PA0157_STR-DAT21 sy-vline 
WA_PA0157_STR-CDD21 sy-vline 
WA_PA0157_STR-DAT22 sy-vline 
WA_PA0157_STR-CDD22 sy-vline 
WA_PA0157_STR-DAT23 sy-vline 
WA_PA0157_STR-CDD23 sy-vline 
WA_PA0157_STR-DAT24 sy-vline 
WA_PA0157_STR-CDD24 sy-vline 
WA_PA0157_STR-DAT25 sy-vline 
WA_PA0157_STR-CDD25 sy-vline 
WA_PA0157_STR-DAT26 sy-vline 
WA_PA0157_STR-CDD26 sy-vline 
WA_PA0157_STR-DAT27 sy-vline 
WA_PA0157_STR-CDD27 sy-vline 
WA_PA0157_STR-DAT28 sy-vline 
WA_PA0157_STR-CDD28 sy-vline 
WA_PA0157_STR-DAT29 sy-vline 
WA_PA0157_STR-CDD29 sy-vline 
WA_PA0157_STR-DAT30 sy-vline 
WA_PA0157_STR-CDD30 sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.